From 715673b886931dddeb3e2a3f05053556628adbbf Mon Sep 17 00:00:00 2001
From: TimePath <andrew.hardaker1995@gmail.com>
Date: Fri, 24 Jun 2016 09:11:38 +1000
Subject: [PATCH] Move PM_ladder to ecs

---
 qcsrc/common/physics/player.qc  | 52 ---------------------------------
 qcsrc/ecs/components/physics.qh |  4 +++
 qcsrc/ecs/systems/physics.qc    | 46 +++++++++++++++++++++++++++--
 3 files changed, 48 insertions(+), 54 deletions(-)

diff --git a/qcsrc/common/physics/player.qc b/qcsrc/common/physics/player.qc
index 38c6fed9e0..f5ff4c4fa5 100644
--- a/qcsrc/common/physics/player.qc
+++ b/qcsrc/common/physics/player.qc
@@ -917,58 +917,6 @@ void PM_swim(entity this, float maxspd_mod)
 }
 
 .vector oldmovement;
-void PM_ladder(entity this, float maxspd_mod)
-{
-	// on a spawnfunc_func_ladder or swimming in spawnfunc_func_water
-	UNSET_ONGROUND(this);
-
-	float g;
-	g = PHYS_GRAVITY(this) * PHYS_INPUT_TIMELENGTH;
-	if (PHYS_ENTGRAVITY(this))
-		g *= PHYS_ENTGRAVITY(this);
-	if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
-	{
-		g *= 0.5;
-		this.velocity_z += g;
-	}
-
-	this.velocity = this.velocity * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this));
-	makevectors(this.v_angle);
-	//wishvel = v_forward * this.movement.x + v_right * this.movement.y + v_up * this.movement.z;
-	vector wishvel = v_forward * this.movement_x
-					+ v_right * this.movement_y
-					+ '0 0 1' * this.movement_z;
-	if(this.viewloc)
-		wishvel.z = this.oldmovement.x;
-	this.velocity_z += g;
-	if (this.ladder_entity.classname == "func_water")
-	{
-		float f = vlen(wishvel);
-		if (f > this.ladder_entity.speed)
-			wishvel *= (this.ladder_entity.speed / f);
-
-		this.watertype = this.ladder_entity.skin;
-		f = this.ladder_entity.origin_z + this.ladder_entity.maxs_z;
-		if ((this.origin_z + this.view_ofs_z) < f)
-			this.waterlevel = WATERLEVEL_SUBMERGED;
-		else if ((this.origin_z + (this.mins_z + this.maxs_z) * 0.5) < f)
-			this.waterlevel = WATERLEVEL_SWIMMING;
-		else if ((this.origin_z + this.mins_z + 1) < f)
-			this.waterlevel = WATERLEVEL_WETFEET;
-		else
-		{
-			this.waterlevel = WATERLEVEL_NONE;
-			this.watertype = CONTENT_EMPTY;
-		}
-	}
-	// acceleration
-	vector wishdir = normalize(wishvel);
-	float wishspeed = min(vlen(wishvel), PHYS_MAXSPEED(this) * maxspd_mod);
-	if(time >= PHYS_TELEPORT_TIME(this))
-		// water acceleration
-		PM_Accelerate(this, wishdir, wishspeed, wishspeed, PHYS_ACCELERATE(this)*maxspd_mod, 1, 0, 0, 0);
-	PM_ClientMovement_Move(this);
-}
 
 void PM_jetpack(entity this, float maxspd_mod)
 {
diff --git a/qcsrc/ecs/components/physics.qh b/qcsrc/ecs/components/physics.qh
index 7457cb29c7..f3af010413 100644
--- a/qcsrc/ecs/components/physics.qh
+++ b/qcsrc/ecs/components/physics.qh
@@ -8,3 +8,7 @@ COMPONENT(phys);
 .vector com_phys_acc;
 .float com_phys_acc_rate;
 .float com_phys_friction;
+
+.vector com_phys_gravity;
+// TODO: remove
+.bool com_phys_ladder;
diff --git a/qcsrc/ecs/systems/physics.qc b/qcsrc/ecs/systems/physics.qc
index 27b3689c90..c38e891ccd 100644
--- a/qcsrc/ecs/systems/physics.qc
+++ b/qcsrc/ecs/systems/physics.qc
@@ -93,7 +93,15 @@ void sys_phys_update(entity this, float dt)
 	} else if (this.waterlevel >= WATERLEVEL_SWIMMING) {
 		PM_swim(this, maxspeed_mod);
 	} else if (time < this.ladder_time) {
-		PM_ladder(this, maxspeed_mod);
+		this.com_phys_friction = PHYS_FRICTION(this);
+		this.com_phys_vel_max = PHYS_MAXSPEED(this) * maxspeed_mod;
+		this.com_phys_acc_rate = PHYS_ACCELERATE(this) * maxspeed_mod;
+		this.com_phys_gravity = '0 0 -1' * PHYS_GRAVITY(this) * dt;
+		if (PHYS_ENTGRAVITY(this)) { this.com_phys_gravity *= PHYS_ENTGRAVITY(this); }
+		this.com_phys_ladder = true;
+		sys_phys_simulate(this, dt);
+		this.com_phys_ladder = false;
+		this.com_phys_gravity = '0 0 0';
 	} else if (ITEMS_STAT(this) & IT_USING_JETPACK) {
 		PM_jetpack(this, maxspeed_mod);
 	} else if (IS_ONGROUND(this)) {
@@ -113,15 +121,49 @@ void sys_phys_update(entity this, float dt)
 
 void sys_phys_simulate(entity this, float dt)
 {
-	// noclipping or flying
+	// noclipping
+	// flying
+	// on a spawnfunc_func_ladder
+	// swimming in spawnfunc_func_water
 	UNSET_ONGROUND(this);
 
+	float g = -this.com_phys_gravity.z;
+	if (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE) {
+		g *= 0.5;
+		this.velocity_z += g;
+	}
 	this.velocity = this.velocity * (1 - dt * this.com_phys_friction);
+	this.velocity_z += g;
+
 	makevectors(this.v_angle);
 	// wishvel = v_forward * this.movement.x + v_right * this.movement.y + v_up * this.movement.z;
 	vector wishvel = v_forward * this.movement.x
 	    + v_right * this.movement.y
 	    + '0 0 1' * this.movement.z;
+	if (this.com_phys_ladder) {
+		if (this.viewloc) {
+			wishvel.z = this.oldmovement.x;
+		}
+		if (this.ladder_entity.classname == "func_water") {
+			float f = vlen(wishvel);
+			if (f > this.ladder_entity.speed) {
+				wishvel *= (this.ladder_entity.speed / f);
+			}
+
+			this.watertype = this.ladder_entity.skin;
+			f = this.ladder_entity.origin_z + this.ladder_entity.maxs_z;
+			if ((this.origin_z + this.view_ofs_z) < f) {
+				this.waterlevel = WATERLEVEL_SUBMERGED;
+			} else if ((this.origin_z + (this.mins_z + this.maxs_z) * 0.5) < f) {
+				this.waterlevel = WATERLEVEL_SWIMMING;
+			} else if ((this.origin_z + this.mins_z + 1) < f) {
+				this.waterlevel = WATERLEVEL_WETFEET;
+			} else {
+				this.waterlevel = WATERLEVEL_NONE;
+				this.watertype = CONTENT_EMPTY;
+			}
+		}
+	}
 	// acceleration
 	vector wishdir = normalize(wishvel);
 	float wishspeed = min(vlen(wishvel), this.com_phys_vel_max);
-- 
2.39.2